create table if not exists vehicle (
    `vin` char (17) primary key not null,
    `remaining_battery` DOUBLE not null,
    `total_mileage` DOUBLE not null,
    `battery_level` DOUBLE not null,
    `create_time` datetime not null
) ;

create table if not exists route_info (
    `id` int  primary  key not null ,
    `name` char (3) not null,
    `data` CLOB not null,
    `create_time` datetime not null
) ;